sudden lost power and lean out at 5psi, fuel pump?
#2
Senior Member
iTrader: (14)
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,482
Total Cats: 0
Well, your tach signal drops about 300 rpm when it happens along with your injector pulse width but goes back up right away and AFRs return to where they were. It's almost like it thinks your decellerating and the overrun is kicking in. Did it misfire at the same time or do you have any questionable grounds that may be creating a noisy signal?
By the way, how do you know your fuel pressure went up? Hood mounted gauge?
By the way, how do you know your fuel pressure went up? Hood mounted gauge?
#3
Well, your tach signal drops about 300 rpm when it happens along with your injector pulse width but goes back up right away and AFRs return to where they were. It's almost like it thinks your decellerating and the overrun is kicking in. Did it misfire at the same time or do you have any questionable grounds that may be creating a noisy signal?
By the way, how do you know your fuel pressure went up? Hood mounted gauge?
By the way, how do you know your fuel pressure went up? Hood mounted gauge?
#5
Senior Member
iTrader: (14)
Join Date: Aug 2008
Location: Tinley Park, IL
Posts: 1,482
Total Cats: 0
Or this /\.
The pump was holding up good until recently, now it's somewhat questionable. I have had it for a while though. I have a gauge on the fuel line but it's only good when not under load.
I'm not sure it's a fuel issue, it seems like something is deliberately stopping it. Double check your settings.
The pump was holding up good until recently, now it's somewhat questionable. I have had it for a while though. I have a gauge on the fuel line but it's only good when not under load.
I'm not sure it's a fuel issue, it seems like something is deliberately stopping it. Double check your settings.
Thread
Thread Starter
Forum
Replies
Last Post